I would also assume that we need only represent a year (and even then often only an approximation) and not month and day, or time.




1. change the profile so that all years based on ISO 8601 syntax are four digits.


2. Introduce the following syntax.  Note that we already use the character E to signal certain "extensions".  Use EY to signal that a year follows, and the syntax is




where [year] may be (a) a plain (or signed) integer, e.g. 100001; or (b) an integer in scientific notation e.g. 17*10^9


Comments please.






From: Discussion of the Developing Date/Time Standards [mailto:[log in to unmask]] On Behalf Of Simon Grant
Sent: Tuesday, January 11, 2011 10:22 AM
To: [log in to unmask]
Subject: Re: [DATETIME] Expanded years


Seems like a good idea to me, too, particularly as beyond the 4-digit range, we are talking about scientific estimates of dates, not dates derived from any kind of written records.


On 11 January 2011 15:07, Edward C. Zimmermann <[log in to unmask]> wrote:

Yes! (the philosophical justification is analogous to the scientific use case)

On Tue, 11 Jan 2011 10:00:44 -0500, Ray Denenberg wrote

> From: Edward C. Zimmermann
> > Sent: Tuesday, January 11, 2011 7:02 AM
> > To: [log in to unmask]
> > Subject: Re: [DATETIME] Expanded years
> >
> > The best solution would be to use a scientific notation.
> Are you suggesting that we use standard ISO 8601 four-digit notation
> for four-digit years, and invent a syntax (perhaps based on
> scientific notation) to represent larger years?  Just trying to get
> clarification on your suggestion, I like the idea.
> --Ray


Edward C. Zimmermann, NONMONOTONIC LAB
Basis Systeme netzwerk, Munich Ges. des buergerl. Rechts
Umsatz-St-ID: DE130492967

Simon Grant
+44 7710031657